Dave,
Did you reseat the USB dongle, unplugging for at least 30 seconds, then plug it back in.
Sometimes gravity, dust or oxidation, will not seem like the culpurit. But, it might be a player, in your situation.
I had an issue with my wired USB keyboard, tried rebooting, no joy.
Reseated the plug for the keyboard, has been working for the last six months.
Seems to me that you're half way to answering your own question; your USB isn't dead.
Tim

 -------------- Original message ----------------------
From: Dave <[log in to unmask]>
> Russ - I did re-sync per the MS get started guide as well as rebooted.
> Didn't help!  Just in case, I tried a 5 year old USB MS optical mouse
> And all worked perfectly.
> 
> David - You say buy a new mouse - Is there an issue with these wireless devices?
> I have a mouse keyboard set for convenience but if there are issues with how
> long these devices last that I am not aware of - I will switch back to wired
> to eliminate the hassle and the expense.
> 
> Thanks for your feedback,
> Dave
> 
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